Mixing-machine.



UNITED sTATEs PATENT oEEicE.

GEORG HILLER, OF TEPLITZ, AUSTRIA-HUNGARY.

MIXING-MACHINE.

To all whom it may concern:

Beit known that I, GEORG HILLER, engineer, citizen of Saxony, Germany,residing at Teplitz, Bohemia, Austria-Hungary, have invented certain newand useful Improvements in Mixing-Machines, of which the following is aspeciiication, reference being had therein to the accompanying drawings.

This invention relates to certain new and useful improvements in mixingmachines and relates more particularly to a'mixing machine adapted forthe mixing of concrete or similar mortar compounds.

The inventionstill more particularly deiined, relates to a mixingmachine for the mixing of mortar compounds in which the said compoundsare moistened by water prior to discharge of the mixture from the mixingmachine.

The invention has for its object the provision of novel means for thethorough agitating and mixing of ingredients in the mixer or mixingmachine, and the subjecting of the thoroughly mixed ingredients orcompounds to a uniform moistening.

The invention consists in the novel details of construction, combinationand arrangement of parts to be hereinafter more fully .described andthen particularly pointed out in the claims, and in describing theinvention in detail, reference will be had to the accomanying drawingsshowing a practical embodiment of the invention, and wherein likenumerals of reference are employed to indicate like parts throughout thedierent views of the drawing, in Which:-

Figure 1 is a. central vertical sectional view of the upper portion of amixing machine showing a preferred embodiment of mixer, or mixing drum.Fig. 2 is a central vertical sectional view of a mixing machineconstructed in accordance lwith my invention, showing a slightlymodiiied form of mixer or mixing drum. Fig. 3 is an enlarged crosssectional view of one of the beaterarms. Fig. 4 is a developed plan viewof a part of the mixing drum. Fig.`5 is a horizontal sectional viewtaken on the line 5--5v of Fig. 4. Fig. 6 is an enlarged diagrammaticside view of a portion of the ribbed drum. Fig. 7 is a plan view of thesame.

In the drawin s, 1 represents a stationary casing or shell, t e lowerportion of which is tapered as clearly shown in Fig. 2, and terminatesinthe outlet 17. The upper portion 1 ofnsaid casing is of less diameterthan the Specification of Letters Patent. Application filed November12,1906; Serial No. 343,079.

Patented Dec. 3, 1907.

main portion 4 of the casing, and is provided with a suitable lid `orcover 2, through which extends a spout 3,-or other equivalent fillingdevice.

Arranged centrally in the cas' 1 is a vertical shaft 5, extendingthrough-utile cover 2, and carrying, substantially within the portion 1of the casing, ahub 6. .To this hub is secured a plurality of radiatingbeater-arms 7, the said beater-arms being secured. to the f hub near theup er end of the latter, and secured to said hul) adjacent its lowerend, are a plurality of radiating arms or spokes 8 which have a slightinclination downwardly from a horizontal line. The said beaterarms 7 andthe arms or spokes 8 sup Orta drum 9 of substantially frus'to-conicai)form and which is provided with beater-ribs 10, inclined to thehorizontal plane of rotation, or, in other words, arranged obliquely tothe center shaft 5, as shown in Fig. 4 of the drawings, and havepreferably the cross section of a triangle, as clearly seen in Fig. 5 ofthe drawings. The hub 6 is also provided intermediate its ends, withradiating beaterarms 12, and these beater-arms 12, and also the beaterarms 7 are all a peculiar form, as

illustrated for one of the beater arms 7 in Fig. 3 of the drawings.

The planes 11 of the beater-arms are inclined to the horizontal plane ofrotation, as indicated by the arrow in 3, whereby the material poured inthrough the spout or other inlet 3 will be thrown upward and outward as'it strikes the beater-arms 7, and will then fall on to the beater ribs9 of the drum and, owin to these beater ribs being arranged ob iquely tothe middle shaftdland' turning in the direction indicated by the arrowin Fig. 4, the material will be thrown towards the center of the drum,where it will be engaged and Jfurther agitated by the beaterarms .12,and also by the spokes or arms 8, as it sifts through thel latter.

As a result of the arrangement of the beater-arms, and the beater ribs,the mate-.

rial is caused to be thrown in different directions, and a thoroughmixing thereof 1s attained before it is discharged from the beaterdrum.

In order that the uniformly mixed com-I lpound upon its discharge fromthe mixing drum may be uniformly moistened, to place it in workingcondltlon upon its dischargell from the casing 1, I provide on the shaft5 at asuitable point below the nux1ngLdrum,-La

dispersing plate 13, substantially conical in form, and provided witharms or ribs 14 on its upper face, conforming in curvature to thecurvature of the upper face of the plate. Arranged to operate in thecasing 1 are one or more perforated water pipes 16, the perforations inwhich are so disposed or arranged as to direct the water onto thedispersing plate 13, as clearly illustrated in Fig. 1 of the drawings.

As the material drops from the mixing drum on to the dispersing plate13, and is engaged by the ribs 14 of said plate, the material is thrownoutwardly into the space 15 of the casing 1, and, during its suspension,is subjected to the spray of water from the pipes 16, and in itsmoistened state drops into the lower part of the casing 1, and,

Owing to the funnel-shaped form of the lower part of said casing, themoistened material is conducted to, and discharged through the outlet17.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent is 1. In a mixing machine, the combination of acasing, a shaft arranged vertically there in, a mixing drum ofsubstantially frustoconical forni mounted on the shaft, and embodyingbeater-arms arranged at an incline to the horizontal, and beater ribs onthe drum arranged obliquely to the vertical Shaft, a dispersing platecarried by the shaft below the mixing drum, and ribs on said plateadapted to throw the material outwardly within the casing, substantiallyas described.

2. In a mixing machine, the combination of a casing, a vertical shafttherein, a mixing drum embodying a hub secured to the shaft, beater-armssecured to said hub, spokes also secured to said hub, and a drum carriedby said beater-arms and spokes and rovided with beater ribs dispersed onthe rum obliquely to the vertical shaft, a dispersing plate mounted onthe shaft below the mixing drum, to receive the material as it isdischarged from the drum, and means extending into the casing formoistening the mixed material received on the dispersing plate.

3. In a machine for mixing concrete or the like, the combination of acasing, a vertical shaft therein, a mixer mounted on the shaft andembodying a hub, beater-arms connected at their inner ends to said -huband arranged at an incline to the horizontal, spokes connected at theirinner ends to said hub and also arranged at an incline to thehorizontal, a drum carried by said beater arms and spokes, being ofsubstantially frusto-conical form, and having beater ribs arrangedobliquely to the vertical shaft, a dispersing plate carried at the shaftbelow the, mixer, and means extending into the casing for moistening thematerial after it has passed the mixer.

In testimonv whereof I aiiix my signature in the presence of twoWitnesses.k

GEORG HILLER.

Witnesses z ADoLPH FISCHER, ARTHUR Scmmz.

